Titanium 4-4-2 vs. ASTM B817 Type I
Both titanium 4-4-2 and ASTM B817 type I are titanium alloys. They have a moderately high 94% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is titanium 4-4-2 and the bottom bar is ASTM B817 type I.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 100 |
| Elongation at Break, % | 10 | |
| 4.0 to 13 |
| Fatigue Strength, MPa | 590 to 620 | |
| 360 to 520 |
| Poisson's Ratio | 0.32 | |
| 0.32 |
| Reduction in Area, % | 20 | |
| 5.0 to 29 |
| Shear Modulus, GPa | 42 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 1150 to 1250 | |
| 770 to 960 |
| Tensile Strength: Yield (Proof), MPa | 1030 to 1080 | |
| 700 to 860 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 310 | |
| 340 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1600 |
| Melting Onset (Solidus), °C | 1560 | |
| 1550 |
| Specific Heat Capacity, J/kg-K | 540 | |
| 560 |
| Thermal Conductivity, W/m-K | 6.7 | |
| 7.1 |
| Thermal Expansion, µm/m-K | 8.6 | |
| 9.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 39 | |
| 36 |
| Density, g/cm3 | 4.7 | |
| 4.4 |
| Embodied Carbon, kg CO2/kg material | 30 | |
| 38 |
| Embodied Energy, MJ/kg | 480 | |
| 610 |
| Embodied Water, L/kg | 180 | |
| 200 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 30 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 4700 to 5160 | |
| 2310 to 3540 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 34 | |
| 35 |
| Strength to Weight: Axial, points | 68 to 74 | |
| 48 to 60 |
| Strength to Weight: Bending, points | 52 to 55 | |
| 42 to 49 |
| Thermal Diffusivity, mm2/s | 2.6 | |
| 2.9 |
| Thermal Shock Resistance, points | 86 to 93 | |
| 54 to 68 |
Alloy Composition
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| Aluminum (Al), % | 3.0 to 5.0 | |
| 5.5 to 6.8 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.1 |
| Chlorine (Cl), % | 0 | |
| 0 to 0.2 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 to 0.2 | |
| 0 to 0.4 |
| Molybdenum (Mo), % | 3.0 to 5.0 | |
| 0 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 to 0.040 |
| Oxygen (O), % | 0 to 0.25 | |
| 0 to 0.3 |
| Silicon (Si), % | 0.3 to 0.7 | |
| 0 to 0.1 |
| Sodium (Na), % | 0 | |
| 0 to 0.2 |
| Tin (Sn), % | 1.5 to 2.5 | |
| 0 |
| Titanium (Ti), % | 85.8 to 92.2 | |
| 87 to 91 |
| Vanadium (V), % | 0 | |
| 3.5 to 4.5 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.4 |